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powerpc/rtas: allow rescheduling while changing cpu states 

rtas_cpu_state_change_mask() potentially operates on scores of cpus,
so explicitly allow rescheduling in the loop body.

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802192926.19277-3-nathanl@linux.ibm.com
alistair/sunxi64-5.4-dsi
Nathan Lynch 2019-08-02 14:29:25 -05:00 committed by Michael Ellerman
parent a6717c01dd
commit 10e4850d7c
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/kernel/rtas.c
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@ -16,6 +16,7 @@
#include <linux/capability.h>
#include <linux/delay.h>
#include <linux/cpu.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/completion.h>
#include <linux/cpumask.h>
@ -898,6 +899,7 @@ static int rtas_cpu_state_change_mask(enum rtas_cpu_state state,
cpumask_clear_cpu(cpu, cpus);
}
}
cond_resched();
}
return ret;